Improvement in tire-bending machines



GEORGE 1. BIBLET, Improvement in Tire-Bending Machins. N0. 114,476, Patented May 2187I.

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Wlfnesse's. Inf/areaal:

j that@ Sitte GEORGE J. RIBLET, 0F BOOTHEVILLI, WEST VIRGINIA.

Letters Patent No. 114,476, dated May 2, 1871.

IMPRVEMENT IN TIRE-BENDING MACHINES.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, GEORGE J. RIBLET, of Bootheville, in the county of Marion and State of Test Virginia, have invented an Improved Machine f'or Bending Tires; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing forming part of this specification, in which- Figure l is a side elevation.;

Figure 2, a top view of the machine; and

Figures 3 and 4 are respectively a front view and side view of the gauge.

Similar letters of reference iu the accompanying drawing indicate corresponding parts.

The object of this invention is to provide for public' use a convenient, simple, and powerful machine for bending tires. To this end,

The invention consists in .the construction which I will now proceed to describe, such construction comprising'the following parts, viz.

First, a suitable supporting-frame Second, a compound lever by which the tire is bent;

Third, an adjustable stop forlimiting the movement of the lever according to the curve of the tire to be formed;

Fourth, a staple and guide to hold the bar while it is forming into a tire;

Fifth, an adjustable feeding-clamp; and

Sixth, a connecting-bar by which the feed-clamp is operated from the working-handle of the compound lever.

In the drawing-- B is a wooden base.

A is the supporting-frame, made of cast-iron in the form of an open oblong box.

O is the compound lever constructed with a projection, c, that works against and bends the tire.

a is a slotted standard supporting the working-handle cl of the lever C.

D is the bar to be bent, one end of which rests on the projection or boss c and the other upon a flanged supporting and guiding-arm, 14.

a. f/ is a staple for holding the tire down at the point where it is bent, said staple consisting of two standards, a a', cast upon the frame A, and a cross-plate `or key, g, supported in slots in the standards; and extending across thc bar E is a right-angled lever, pivoted to the post a, and connected at one end by a slot and pin, c, to the handle (l, while the other end is bent outward, as shown at c', so as to strike `an adjustable stop, I-I, when the handle ot' the lever is worked, and thereby limit the movementof the levers and canse them to bend the bar to a circle of any desired size.

I is a rod connecting the lever E to the feed-clamp,

and'eonstructed with an extension-piece, j, at its end, adjustable by means of a screw-nut, t, working on a stem between two'lngs on the part I, as shown.

an, m1 m2 is the feed-clamp, consisting of a c'urved plate, m, bent across at its front end above the bar D,

as shown at m1, and at its rear end bent down across under the bar and up on the opposite side thereof', so

asA to support a pivoted clamping-plate, an, which can be rocked on its axis by means of a lever, N ,"-aud I is a rigid arm, extending down from the bar I, and

the bar D, and to liberate itagaiu whenever the rod reverses its movement.

The clamp-plate m2 is made with two biting edges, and can be turned to lwork with either. The lever N likewise has two arms, either of which may be connected to the rod I j. i

One of the edges of the plate,'and one of the arms of the lever may be longer than the other, so as to adapt them, by simply reversing their position, to work with thicker or thinner bars D.

In combination with the apparatus above described for bending the tire I employ a gauge,- R, represented in ligs. 3 and 4, for determining the proper curvature thereof Said gauge is constructed with two legs, lr r, which incline away fromcach other like the legs ot' a pail of dividers, but are not movable. Between thern is an adjustable pointer, which can be fixed at any required height by means of a slot and setscrew, s.

The practical operation of these parts is as follows:

lhe bar to be bent is rst scalloped at each end to iit it for welding. The gauge is then set to the curve of the wheel by laying it on the wheel, adjusting the slot and set-screw so that the three points of the gauge will correspond to the curve. One end of the bar' is then bent to the curve indicated by the gauge, and passed through the feed-clamp and under the plate g, as shown in iig. l, untilthat point ci the bar where the curve begins is fairly under said plate g. The 0perator then, by means of lthe handle (l, raises thelever C until the projection c touches the bar, and holding it in that position adjusts the gauge or stop I-I so that it will just touch the lower end of the lever E. Ihe parts are now all in their propel' position, and by simply working the lever C with one hand the bar will be fed to the machine and rapidly and easily bent into the required circle. One edge of the key-plate g'is to fracture or rapid wearing out.

cnt away, so that by drawing ont said key-plate and turning it over a bar of difierent thickness or width may be bent, and with two keys fourvsizes of bars mayv be worked,

This machine bends to a truer circle and is .worked more easily than any heretofore brought into public use, onehandlbeing all vthat snecessaryto bend the largestvt-ire, and no part of the mechanism being liable Having thus described my invention, I What I claim as new therein, and desire to secure by -Letters Patent, is-

1. The frame A a a and plate g in combination with the compound lever .C and guide-arm F, all constructed and arranged substantially as herein shown and described.

2., The right-angled lever E and adjustable stop H.

in combination with the lever C, substantially as and for the purpose specified.- v

3. lhe 'feeding-clamps m 'ml m2 N, constructed to operate in connection with the bar D and rod'I, sub-v Witnesses:

EDMUND WATKINS, JOHN W. POWELL. 

